"adjuvant" in the noun sense
1. adjuvant
an additive that enhances the effectiveness of medical treatment
"adjuvant" in the adjective sense
1. accessory, adjunct, ancillary, adjuvant, appurtenant, auxiliary
furnishing added support
"an ancillary pump"
"an adjuvant discipline to forms of mysticism"
"The mind and emotions are auxiliary to each other"
2. adjuvant
enhancing the action of a medical treatment
"the adjuvant action of certain bacteria"
Source: WordNet® (An amazing lexical database of English)
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